Tire-machine drum



w. F. GAMMETER.

TIRE MACHINE DRUM.

APPLICATION FILED AUG-15,1919.

1,332,330. Patented Mar.2,1920.

WILLIAM F. GAMMETER, OF CADIZ, OHIO;

TIRE-MACHINE DRUM.

Specification of Letters Patent.

Patented Mar. 2,1920.

Application filed August 16, 1919. Serial No. 317,914. a 1

To all whom it mayconcern:

Be it known that I, WILLIAM F. GAM- METER, a citizen of the UnitedStates, residing at Cadiz, in the county of Harrison and State of Ohio,have invented certain new and useful Improvements in Tire-Machine Drums,of which the following is a specification.

This invention relates to improvements in stock shells or drums and isdesigned more particularly as an improvement on the shell or drum shownin my Patent No. 1,104,296, issued July 21, 1914.

In the patented structure there is provided in each end' of the body ofthedrum, a head having a polygonal opening to receive the polygonalshaft or spindle upon which the drum is supported and bywhich it isrotated, a tubular core beingfitted' at its ends to the said head andextending-axially within the drum to receive the said shaft or spindleand strengthen and reinforce the engagement between the parts. Thepresent invention is directed chiefly to a novel means for securingtogether the said heads in the ends of the drum and the ends of the saidtubular core whereby these parts will be rigidly united and securely.braced with relation to each other, the means provided for this purposeserving also in an effectual manner to prevent the heads be ing driveninto the drum beyond their proper positions and to prevent the headsbeing pried or forced out from the ends of the drum.

Another object of the invention is to provide a connection between theheads and the ends of the core which may be conveniently secured at alow cost of production and which will serve in the most positive mannerto secure together these parts,

In the accompanying drawings:

Figure 1 is a erspective view, parts being broken away, ilustrating apartially completed drum constructed in accordance with the presentinvention;

Fig. 2 is a vertical longitudinal sectional view therethrough;

Fig. 3 is an end elevation of the drum,

Fig. 4: is a perspective view of one end of the core before itsconnection with its respective head;

Fig. 5 is a transverse sectional view illustrating a modified form ofcore.

In the drawings the numeral 1 indicates in general the body of the drumwhich body is formed from sheet metal of the required gage and rolled tocylindrical form, the body being provided as is customary, in themanufacture of drums of my invention, with a longitudinally extendinggroove or c annel 2 to receive the end edge of the sheet 3 of rubber orother material to be wound upon the drum.

As in the patented structure, a head is arranged in each end of the drumand each of these heads, indicated in general by the numeral 4,comprises a substantially circular sheet metal body 5 having aperipheral flange 6 prO ecting from its outer face, the flangedperiphery of the head being frictionally or otherwlse secured within therespective end of the body of the drum. This head may be positioneddirectly at the end of the drum or it may be spaced inwardlyfrom the endof the drum any desired distance. In order to receive the ends of thetubular core, the bodies of the heads 5 are formed centrally w1thpolygonal openings 7.

In that form of the invention shown in Flgs. 1 to 4 inclusive, the coreis formed in two sections and in the form shown in Flg. 5, it is formedin four sections. Also in each illustrated form the core is rectangularin cross section to receive a correspondlngly formed mandrel or shaft(not shown) although it will be understood that the shaft and core mayhave some other polygonal cross sectlon if found desirable andconseuently the core may be formed in more t an our sections withoutdeparting from the invention. In the drawings the core is indicated ingeneral by the numeral 8 and in the two-part form comprises counterpartsections each having right angularly extending wings 9 which form twowalls of the core, each wing being provided at its free longitudinaledge with an outstanding flange 10. When the sections are assembled,these flanges are disposed in contact and registration as shown in Figs.1 and 4 of the drawings and are secured together by means of rivets orother suitable securing elements 11. The flanges 10 terminate short ofthe ends of the core so as to provide 0 positely located shoulders 12spaced inwar 1y from each end of the core. In a line with the bendforming the juncture between the wings 9 comprising each section of thetwo-part core shown in Figs. 1 to 4 inclusive, each section is formedwith a slit or incision 13 preferably extending inwardly from the end ofthe core the same distance that the shoulders 12 at the ends of theflanges 10 are spaced inwardly from the corresponding ends of the core.Thus at each end of each wall or side of the core there is formed atongue indicated by the numeral 14:- In assembling the core with theheads 4, each end ofthe core is inserted into the opening 7 in therespective head so that the shoulders 12 will abut squarely against theinner face of the respective head. The tongues 14 are then struck downso as to bear firmly against the outer or opposite face of the said head4, and rivets or other suitable securing elements indicated by thenumeral 15 are secured through the said tongues and the body of thehead, and these parts are in this manner permanently and securelyunited. As a result of this construction there are no rivet heads orother obstructions offered to the insertion of the shaft or mandrel intothe core, the inner surfaces of the walls or sides of the core beingleft intact and unobstructed. It will be evident at this point that theengagement of the bodies or webs of the heads against the shoulders 12serve effectually to prevent the heads being driven into the drum beyondtheir properly located positions, and on the other hand the tongues 14serve efl'ectually to prevent the heads being driven out through theends of the drum.

In that form of the invention shown in Fig. 5 inwhich the core is formedfrom four sections, each section indicated by the numeral 16,constitutes one side or wall of the core and each is formed at each ofits longitudinal edges with an outstanding flange 17, these flangescorresponding to the flanges 10 and being secured together in the mannerheretofore described. In this form of the invention all of the flangeswill, of course, terminate short of the ends of the core so that .theweb or body of each section will project at-its ends beyond its flangesto provide-tongues corresponding to the tongues 14.

Any suitable form of spider or bracing head 18 and any number of theseheads desired. may be positioned upon the core and within the body ofthe drum so as to not only prevent the breaking down of the intermediateportion of the drum but also to prevent distortion or bending of thecore.

Having thus described the invention, what is claimed as new is:

1. In a device of the class described, a tubular mandrel receiving coreflanged longitudinally and receiving drum heads spaced apart withrespect to each other by said longitudinal flanges, and means integralwith said core and projecting through and en aging with said drum headsto per manentIy associate the same with said core.

2. In a device of the class described, a

tubular mandrel receiving core formed of longitudinally flangedconnected abutting members and receiving drum heads spaced apart withrespect to each other by said longitudinal flanges, and means integralwith said core and projecting through and engaging with said drum headsto permanently associate the same with said core.

3. In a device of the class described, a tubular mandrel-receiving corehaving a longitudinal seam and provided at its seam with outstandingflanges terminating short of one end of the core, and a drum head fittedonto the core and engaging at one side against the said ends of theflanges, the core beyond the ends of the flanges being flanged againstthe other side ,of the said head.

4. In a device of the class described, a tubular mandrel-receiving corehaving a longitudinal seam and provided at its seam with outstandingflanges terminating short of one end of the core, a drum head fittedonto the core and engaging at one side against the said ends of theflanges, the core beyond the ends of the flanges being flanged againstthe other side of the said head, and

securing elements secured through the said flange and the said head.

5. In a device of the class described, a tubular mandrel-receiving corecomprising sections provided with meeting flanges whereby they may beunited, the flanges terminating short of one end of the mandrel, and adrum head fitted onto the said end of the core and bearing atone sideagainst the ends of the said flanges, the said ends of the sectionsbeing formed with flanges engaging against the other side of the saidhead and holding the head in engagement with the said ends of the firstmentioned flanges.

6. In a device of the class described, a tubular mandrel-receiving coreof polygonal cross section comprising assembled sections havinglongitudinal extending meeting flanges whereby they may be united, theflanges terminating short of one end of the core, a the core andengaging against the said ends of the flanges, the said end of the corebeing turned back to provide flanges bearin against the outer face ofthe said head, an means securing the last mentioned flanges to the head.

7.In a device of the class described, a tubular mandrel-receiving corepolygonal in cross section and comprising assembled sections, eachsection including relatively angularly disposed wings and each beingprovided at its free longitudinal edges with flanges, the flanges of thesections being dis posed in meeting relation and terminating short ofone end of the core to provide shoulders spaced inwardly from the saidend of the core, the sections being each provided drum head fitted ontothe said end of V with an incision in between its wings from the saidend t fitted onto the gaging at bne s1 formed by the ends classdescribed of tubular form and-polygonal cross section, the said corebeing provided with flanges in a line with the juncture of adjacent onesof its sides, and other 15 sides of the core being divided in a linewith their juncture at one end of the core, the said flanges terminatingshort of the said end of the core.

In testimony whereof I aflix my signature. 20

WILLIAM F. GAMMETER. [L. a]

